Merge pull request #1 from ddrichman/master

Make chunk caching less demanding on backends.
Small documentation cleanup.
Increment project version to 0.1.2

Changes since the last version:

- Small improvements in README documentation

- Fixed CachingChunkStore to avoid expensive side effects in swap! of
  cache atom (thanks to Daniel Richman)
Add Clojars version badge to README
Travis CI integration
Fix logging error and add Travis badge
Remove a fixed path to the lein2 binary
Increment project version to 0.1.3

Changes since the last version:

- Added Clojars badge and Travis CI badge to README

- Small fix in log4j.properties

- Fixed a test helper that specifies a relative path to leiningen; it
  now assumes that an executable `lein2` can be found in PATH
add credits for contributors

[~/dev/weatherbill/projects/docbrown]$ find -iname '*.clj' -exec git blame {} \; | grep Davis | wc -l
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[~/dev/weatherbill/projects/docbrown]$ find -iname '*.clj' -exec git blame {} \; | grep Alice | wc -l
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[~/dev/weatherbill/projects/docbrown]$ find -iname '*.clj' -exec git blame {} \; | grep Galkin | wc -l
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[~/dev/weatherbill/projects/docbrown]$ find -iname '*.clj' -exec git blame {} \; | grep Steve | wc -l
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[~/dev/weatherbill/projects/docbrown]$ find -iname '*.clj' -exec git blame {} \; | grep Khalsa | wc -l
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[~/dev/weatherbill/projects/docbrown]$ find -iname '*.clj' -exec git blame {} \; | grep Rama | wc -l
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[~/dev/weatherbill/projects/docbrown]$ find -iname '*.clj' -exec git blame {} \; | grep Chagnon | wc -l
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[~/dev/weatherbill/projects/docbrown]$ find -iname '*.clj' -exec git blame {} \; | grep Richman | wc -l
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[~/dev/weatherbill/projects/docbrown]$ find -iname '*.clj' -exec git blame {} \; | grep Silva | wc -l
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Merge pull request #2 from aliceliang/master

add credits for contributors
Improve docs and make some tests easier to use.

Update protocol documentation. Make a couple more
chunk store testing functions public so other backends
can use them.

Also a couple of minor formatting changes.